Then shall the trees of the forest sing for joy before the LORD, for he comes to judge the earth.
We have here the thanksgiving psalm which David, by the Spirit, composed, and delivered to the chief musician, to be sung upon occasion of the public entry the ark made into the tent prepared for it. Some think he appointed this hymn to be daily used in the temple service, as duly as the day came; whatever other psalms they sung, they must not omit this.
Commenting on 1 Chronicles 16:7-36
HIS PSALM OF THANKSGIVING. (1Ch. 16:7-43) Then on that day David delivered first this psalm--Among the other preparations for this solemn inauguration, the royal bard had composed a special hymn for the occasion. Doubtless it had been previously in the hands of Asaph and his assistants, but it was now publicly committed to them as they entered for the first time on the performance of their sacred duties.
Commenting on 1 Chronicles 16:7-43
Then shall the trees of the wood sing out at the presence of the LORD, because he cometh to judge the earth. (p) To restore all things to their estate.